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PhantomJS is doing a great job of capturing web pages into image files for me. I am using a script based on rasterize.js.
However, for certain web elements of a fixed size, I need the resulting image to match the size of the web element.
e.g. I have a page like this:
<html>
<body>
<div id="wrapper" style="width:600px; height:400px;">
Content goes here...
</div>
</body>
</html>
In this example, I need it to produce an image sized at 600x400. Is thre a way to get the viewport size dynamically based on a web element in the page I am rasterizing.
I know this one is not a easy one... Ideas?
Thanks
967
Wow. Not that hard after all. Just set the viewport really big and use the cropRect function. What a great tool!
Mods to rasterize.js:
page.open(address, function (status) {
if (status !== 'success') {
console.log('Unable to load the address!');
} else {
var height = page.evaluate(function(){
return document.getElementById('wrapper').offsetHeight;
});
var width = page.evaluate(function(){
return document.getElementById('wrapper').offsetWidth;
});
console.log('Crop to: '+width+"x"+height);
page.clipRect = { top: 0, left: 0, width: width, height: height };
window.setTimeout(function () {
page.render(output);
phantom.exit();
}, 200);
}
});
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